Roofing



ep 1935- G. s. LOGAN ,9 3

' ROOFING Filed Oct. 21, 1953 INVENTOR GKSTA/VLEX lam/v EWM Wm ATTORNEYS Patented Sept. 3, 1 35 V a 2 013,002

v UNITED STATES PATENT OFFICE 2 2 ,013,002 1' I Q a 1 ROOFING V 1 George Stanley Logan, Chicago, Ill.

Application October 21, 1933, Serial No. 69%,533

" 2 Claims. (01. 168-7) 1 My invention relates to roofing, and includes edge l4 downwardly. "These portions lie outside amongits objects and advantagesasimplification the rectangular contour of the shingle and one of the arrangement of shingles to provide an atof them is .provided from an adjacent shingle, tractive-design. r leaving'thenotch IS in the other shingle. The 5 In the accompanying drawing: other" projection is from material lying between 5 Figure 1 is a diagrammatic viewof a strip of the opposed truncated corners l2 in'Figure 1. roofing material illustrating the metho'd of cut- Theseportions 38 not only prolong the abutment ting the individual'shin'g'les; edgesbut they also enlarge the triangular por- Figure 2 is'a view illustrating the arrangement tions outside the slits 18 but within the contour of the shingles upon'a roof; of the shingle, into squares. 10

Figure 3 is an enlarged view of one-of the shin- In Fi u t e, p 34 defined y h lei-Shaped gles; slit 20 is raised slightly to overly the material Figure-4 is a sectional'detailed. view taken of the other interlockedshingles, This extra along the line 44 of Figure 2; thickness strengthens the interlocking portion of Figure 5 is an enlarged view of one corner of the shingles. The horizontal portion of the slit 15 the shingle. exceeds the horizontal width of the tongues In the embodiment selectewto illustrate the i rec iv y ut n q r f n inch. invention, theshinglecomprise's a body portion Referring to Figure 2, a nail 36 is driven l0 substantially rectangular in cross section havthrough each corner of each shingle just above 20 ing a truncated lower corner l2 and two trunthe slit l8 before thenext overlying row is placed 20 cated aligning corners I4. The top corner is cut in pos tio The b d e b l w't e s ts 20 a away at I6 and the two lower sides are slit at l8 easily interlocked With the slits y pu just below the corners M. The lower corner of upwa t overlying shingle a t the br d each shingle is provided with a slit 20. 2| has been entered in the lower end of the slit In Figure 1 I have illustrated the method of l8. Th ut in edges M are arran d so th as cutting the individual shingles from a strip 22 the rows are perfectly aligned when the edges of roofing material. The strip is intermittently are arranged in contact in the manner illustrated severed along its median line at 24 to define one in Figure 2. Thus in each course the truncated lower diagonal edge of each shingle. Similarly, portion n the r h h d c rn r of on shin l the strip is severed at predetermined spaced inabuts the truncated portion on the left hand cor- 30 tervals along transverse lines 26 to define the er Of t jac Shingle Then each P other lower vertical edge of each shingle and one Of abutting truncated Portions is engaged in the of the upper vertical edges of each shingle. The p d l in th l w r c rn r of an v rcdges of strip 22 itself define the other vertical lying Shingle, as the next course is Secured in edge of each shingle. place. 35

The arrangement of the lower row of shingles on r f r n to Figure 2 i will be no d h t in Figure 1 is the same as the arrangement i the various distances determining the strength the upper row if rotated 180 in the plane of the of the interlock to resist rupture are closely instrip. Thus the truncated corners [2 are arr ate y upward p l on the overlying ranged in substantially opposed relation angularshingle, as by wind tending to get under a lower 40 1y across the strip 22 near the middle thereof. exposed edge, tends to tear the bridge 2| out of In laying the roof, the usual starting strip may the overlying shingle. It also tends to tear the be employed to underly the shingles 30 or a row tabs oil" the underlying shingles. It also tends of shingles 28 is fastened to the roof with the to lift all three interlocked corners, and this aligning edges M in abutting relation. The lower tendency has to be resisted by the adjacent nails 45 part 'of each shingle 28 is cut ofi along a trans- 36 which grip the underlying shingles only.

verse line a short distance below the lower ends To secure sufiicient strengt against ea of of the slits l8. A second row 30 is laid in the these forces without requiring too much overlapsame way, but with the side edges interlocked ping, and still produce the simple shape of exinto the slits 2B. In other words the bridge 2| posure required by the customer for esthetic rea- 50 of each shingle is slipped into the slits I8 of each sons, the relative proportions between the parts of two abutting shingles in the underlying row. should be substantially as in Figure 5, in which To increase the eifective length of the aligning the dot and dash lines 39-49 indicate the coredges I4 I leave in place a small triangular porner contour of a simple quadrilateral figure. The

5 tion 38 lying beside the slit l8 and extending the abutment edge 14 lies substantially one-fourth above the dotted horizontal line 40, another quarter below the center line but within the quadrilateral contour, and a lower half outside the contour. The upper end of the slit IB is substantially level with intersection of the abutment edge M and the contour line 39. This makes it possible to get the truncated edge l2, the adjacent diverging side edges of the same shingle, and the adjacent converging side edges of the two shingles in the course below, to meet in two triple intersections at the ends of the edge I2, and still have enough material for adequate strength to resist each of the different straining actions encountered, together with exactly the right overlap and a reasonable degree of freedom in placing the nails 36 so as to avoid knot holes and the like.

Without further elaboration the foregoing will so fully explain my invention that others may, by applying current knowledge, readily adapt the same for use under various conditions of service.

I claim:

1. A roof made up of diamond-shaped shingles laid in courses with one corner lowermost; each shingle having duplicate truncated side corners, and a locking tab at each side corner extending downwardly outside the contour of the diamond shape, the outer vertical edge of each tab constituting a downward continuation of the adjacent truncated corner; the lower end of each tab having a horizontal lower edge, the inner end of which edge intersects theadjacent side of the diamond; said lower end being separated from the main body of the shingle by an upwardly extending slot beginning at the inner end of the lower end edge of the tab, said slot having its upper end below the level of the horizontal center line of the shingle; the shingles of each course being laid with'their truncated side corners and tabs in abutment; each shingle having in its lower corner a single centrally located U-shaped slot wide enough to receive the abutting tabs of two shingles in the course below, and defining a flexible flap with its free edge lowermost adapted to overlie and thus reenforce both inserted tabs; the lower corner of each shingle being truncated; each end of the truncated lower edge of each shingle intersecting the adjacent diagonal edge at substantially the point where said diagonal edge intersects a diagonal edge of a shingle in the course below.

2. A roof made up of diamond-shaped shingles laid in courses with one course lowermost; each shingle having duplicate truncated side corners, and a locking tab at each side corner extending downwardly outside the contour of the diamond shape, the outer vertical edge of each tab constituting a downward continuation of the adjacent truncated corner; the lower end of each tab being separated from the main body of the shingle by an upwardly extending slot having its upper end below the level of the horizontal center line of the shingle; the shinglesofeach course being laid with their truncated side corners and tabs in abutment; each shingle having in its lower corner a single centrally located slot wide enough to receive the abutting tabs of two shingles in'the course below; the lower corner of each shingle being truncated; each end of the truncated lower edge of each shingle intersecting the adjacent diagonal edge at ,substantially the point where said diagonal edgeintersects a diagonal edge of a shingle in the course below; and driven fastening elements passing through each side corner of each shingle at a point spaced upwardly and toward the vertical center line from the upper end of the adjacent slit, each fastening element also passing through a shingle in the course below near the upper corner thereof. 7

. G. STANLEY LOGANL 

